Impacts of IDH mutation, MGMT promoter methylation, and 1p19q co-deletion on OS time. (A) The OS of IDH mutation, wild-type, and unknown; (B) the OS of MGMT promoter methylation, unmethylated, and unknown; (C) the OS of 1p19q co-deletion and without co-deletion; (D) the OS of combination groups. IDH, isocitrate dehydrogenase; MGMT, O-6-methylguanine-DNA methyltransferase; OS, overall survival.